CVE-2025-29069: Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-29069 is a high (CVSS 7.3) Heap-based Buffer Overflow vulnerability. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34.4% of scored vulnerabilities.

Timeline

1. 01-04-2025
   PublishedVulnerability first disclosed.
2. 04-04-2025
   Last modifiedVulnerability information updated.

Description

A heap buffer overflow vulnerability has been identified in the lcms2-2.16. The vulnerability exists in the UnrollChunkyBytes function in cmspack.c, which is responsible for handling color space transformations. NOTE: this is disputed by the Supplier because the finding identified a bug in a third-party calling program, not in lcms.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().